Stephen Tu, on 2019-November-13, 15:47, said:
Your entire premise seems absurd.
If diamond holding was critical to bidding *small slam*, this should have been resolved by auction below 4S, by cue bidding. If you are waiting to 5 level to do it, it's too late! How can RKB bidder know in advance that partner will conveniently answer 5c leaving room for a 5d ask about the diamond suit? Any other answer you are screwed since your method is using the Q ask as *that specific suit* ask, not diamonds specifically.
RKB is asking about aces and *trump honors*, because trump honors are hard to show in most methods, because people often don't have cue methods revolving around showing honors in trumps, since return to suit is usually regressive and slam discouraging, and because of RKB popularity. Trump Q loser often cannot be avoided or requires good guessing. 2nd/3rd round of diamonds can be ruffed or discarded on a side suit, they are not important anywhere close to the trump Q in terms of frequency.
Plus you are wanting to show heart ace with 5H, which was already shown by 5c response. Why? Why not have 5H show something else that's useful that hasn't been shown yet instead?
Again it makes no sense to prioritize 3rd round diamond controls over the trump Q. The trump Q is a possible loser about half the time. The DQ is relevant far less often than this.
Now if you need a particular diamond honor for *grand* slam, the normal mechanisms cover this. Again if you need *both* DK and DQ for grand, IMO some of this should have been uncovered in the auction prior to launching into RKB, or perhaps the RKB asker should have maneuvered to answer RKB instead of asking.
Since he is returning to this point again, I try to clarify what I said. Suppose you are the RKB bidder having 2 Aces and the Queen of
♠ and that by the bidding seems to have a good hand from the partner. When you start with 4NT you certainly don't know the answer but the partner reports 3 keys. Now, going on, let's leave temporarily for part 5
♦ and see instead 5
♥ which is SpecificSuitAsking (= SSA) asking if in that suit there is the King with NT as answer or the Queen with suit answer. The same is true for 6
♣ and also for 6
♦ and this last bidding at this level since the previous one was reserved for the reporting of the Queen of trump cards. But what if you need more information in
♦ with probable other statement ? Now I'm trying to bring this to the lower level togheter with the Queen's trump report. Thus in the cheapest or next step in that suit a double indication is created both when indicating the King of Hearts for the Queen of trump and when indicating the Ace for the Queen of Diamonds. So, returning to the beginning, if you have the Queen of
♠ you already know that the answer will be yes in suit but negative and a different indication would not be clear. Instead, in this choice of mine, it becomes possible to have this indication encoded together with something else. Therefore, returning to the subject, resorting to a second information system allows the integration of the RKB by extending the effects (without changing it) by taking advantage of, or even different indications not covered as the top distribution points that allow to riff tricks in addition to the indication different of the side controls valid both for the Kings and for the Axes that (with a proviso) for the Queens effected with shift.